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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Cash flows from operating activities      
Net income (loss) $ 23,170 $ 21,509 $ (53,906)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:      
Depreciation and amortization 20,902 21,883 24,599
Share-based compensation expense 1,562 1,473 1,085
Loss on disposal of property and equipment 47 18 3,060
Change in fair value of business combination liability (5,642) (5,932) (6,000)
Gain on extinguishment of convertible notes     (84)
(Income) loss from joint ventures (1,017) (314) 3,148
Deferred income taxes (329) (371) (129)
Changes in operating assets and liabilities, net of acquisitions      
Accounts receivable 71,129 (133,293) 4,232
Inventory 18,283 (32,043) 12,906
Prepaid expenses and other (7,513) 2,534 (6,367)
Accounts payable (21,127) 30,838 (12,518)
Accrued expenses (26,234) 23,820 16,283
Income taxes payable (3,014) 2,921 5,750
Reserve for sales returns and allowances (7,210) (6,897) (2,999)
Other liabilities 3,281 (5,147) (11,324)
Excess tax deficiency from share-based compensation   (85) (160)
Total adjustments 43,118 (100,595) 31,482
Net cash provided by (used in) operating activities 66,288 (79,086) (22,424)
Cash flows from investing activities      
Purchases of property and equipment (18,327) (10,453) (10,129)
Change in other assets (4,149) (2,766) (135)
Contributions to joint venture     (1,636)
Distributions from joint venture 60 332 1,149
(Purchases) sale of marketable securities 220   (2)
Net cash used in investing activities (22,196) (12,887) (10,753)
Cash flows from financing activities      
Common stock surrendered (1) (2) (34)
Common stock repurchased (13,193) (24,000)  
Proceeds from (repayment of) credit facility borrowings     (70,710)
Credit facility costs (188) (1,851)  
Dividends paid     (3,084)
Proceeds from issuance of convertible notes   115,000 100,000
Bank fees related to convertible notes   (4,594) (4,179)
Retirement of senior convertible notes   (39,000) (61,000)
Proceeds from issuance of common shares of non-controlling interests   490  
Net cash provided by (used in) financing activities (13,382) 46,043 (39,007)
Net increase (decrease) in cash and cash equivalents 30,710 (45,930) (72,184)
Effect of foreign currency translation 293 384 (66)
Cash and cash equivalents, beginning of year 71,525 117,071 189,321
Cash and cash equivalents, end of year 102,528 71,525 117,071
Cash paid (refunded) during the period for:      
Interest 10,198 8,964 4,408
Income taxes $ 7,832 $ 945 $ (4,644)